RMAN -- multiple target databases

Have an RMAN database called RMAN, set up on Box 1. Have a target
database (DB1) on Box 2 that I want to use to test the backup
and recovery process. After it is successful, would then like
to use the same RMAN database to target another database (DB#2)
on Box 3.

Target database #1 and #2 have the same SID but different TNSNAMES
aliases because one is development and the other is production.
Is it possible to use the same RMAN database and target more
than one database like this? Do I just need to create separate
schemas within RMAN database and run the catrman script to be
able to accomplish this?

The RMAN database was pre-existing on this box. Is there any
quick way to see if RMAN was linked up with Veritos successfully?
Does anybody have any directions on how to link it up with Veritos?